Grease-cup.



N. wy cumin/HNS.' GREASE cui'. APPLICATIONTILED APH. 2. i911.

- mmm@ rman Wlmmrs.

- mgm@ .my 17), 1917.

LLM'. mmmm y. j@ y l v NORMAN Wl CUMIVIINS, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR T0 THE BURNS @s BASSICK COMPANY, OFA BRIDGEPORT, CONNECTICUT, A. CORPORATION OF CON- NECTICUT.

GREASE-CUP.

A Application filed April 2, 1917.

To all whom t may concer/n:

Be it known that I, NORMAN W. CUM- MrNs, a citizen of the United States, residing at the city of Bridgeport, county of Fairfield, State of Connecticut, haveinvented certain new and useful Improvements in Grease-Cups; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to certain new and useful improvements in grease cups, and more particularly to a rotatable closure therefor, and it has for an object to provide a simple and eicient closure cap construction without the use ofwashers, rivets, screws, or other extra parts.

The invention consists of an inner cap and an outer can positioned over the former and extended below or beyond the same, the outer cap being then crimped or turned inwa-rdly so as to leave a space between the crimped end of the outer cap and the marginal edge of the inner cap, within which space is confined a spring element. By this construction, the outer cap is held from removal and in close fitting relation with the inner cap to thereby exclude dirt and foreign mattervfrom entering between the caps.

Therefore, the invention further resides in the provision of a rotatable closure for grease cups, and other receptacles, which will bedust-proof without the addition of washers.

Further, the invention resides in the features of construction hereinafter described in detail, and succinctly claimed, reference being had to the accompanying drawing wherein Figure 1 is a side elevation of the irnproved grease cup;

Fig. 2 is a top plan view thereof;

Fig. 3 is a vertical section through the cup on line 3-3 of Fig. 2; and

Fig. 4 is an edge elevation of the coiled spring employed in the improved construction.

Referring more in detail to the drawing and using like characters of reference for corresponding parts, the numeral 1 designates the grease cup body having the discharge nipple 2 in which is arranged the vertical steel tube 3 for containing the wick Specication of Letters Patent.

Patented July i7, 191?.

Serial No. 159,242.

i and the braided wir@ 5, au of which is well known and common in lubricators of this type.

The closure, constituting the subject matter of the present invention, comprises an inner cap 6 which is tightly and securely fixed on the upper end of the cup body by friction, the peripheral flange of the cap embracing the exterior of the body so as to present the lower marginal edge or shoulder 7 outside the body, An outer cap 8, having an internal contour similar to the exterior of the inner cap 6, is mounted thereon so as to revolve freely and embodies peripheral iiange 9 that extends down below the lower marginal edge 7 of said inner cap. As is clearly ,depicted in Fig. 3, this extended flange 9 has its lowermost edge inturned or crimped to provide a shoulder 10 that is spaced from, but opposes, the marginal edge 7. A resilient element is interposed in the space between the opposing surfaces or shoulders, and said element in this instance consisting of a coiled spring 11, which may embody but a single coil, one terminal bea-ring upwardly against the shoulder 7 and the other terminal exerting a downward pressure on the shoulder 10.

By this construction, the outer cap is readily rotatable and retained in any position by the spring; the spring keeps the opposing faces of the caps close together to exclude dust and dirt; and no additional parts, such as a central rivet, are required to pivotally connect the caps. There is no actual connection between the inner and outer caps and, consequently, the assembling and mounting of the closure is greatly facilitated and may be expeditiously and economically accomplished.

The caps are provided with coinciding filling openings 12 and 13, the cap 8 being relatively rotatable to register the openings or to displace them, the coiled spring element serving to retain the outer cap in a predetermined position.

The closure comprises only three parts, all of which are metal. No washer or other packing is required between the caps since the spring holds said relatively conforming caps closely together. The parts may be assembled either on or ofil the cup body, the inner cap being pressed on into frictional engagement with the body, embracing the exterior of the latter.

What is claimed is:

l. In combination. with a cup body, an inne-1l cap having a peripheral flange frictionallv embracing the eXterior of the body, an outer cap having its inner surface conforming to the outer surface of the inner cap, said outer cap also having a peripheral flange extending below the marginal shoulder of the flange of the inner .cap and crimped inwardly to form a shoulder opposing the aforesaid shoulder of the inner cap, and a coiled spring interposed between the opposing shoulders to hold the inner and outer lcaps .closely related, said caps having registrable openings for the insertion of .a lubricant.

2. A closure for grease cups comprising an inner cap having a marginal shoulder, an outer cap rotatable on the inner eap and extending beyond the latter, said extended part being inturned to provide a shoulder opposing the rst shoulder, both caps having registrable openings, and a coiled spring interposed between the opposing shoulders of kthe caps.

In testimony whereof l aiX my signature in presence of two witnesses.

H.V KOHLER, A. E. BELISLE.

Copies 01;' this patent may b e obtained` for five. cents each, by addressing the Commissioner of Patents,

' Washington, D.. 9, 

